Shutter-lock.



G. W. FISHER.

SHUTTER LOCK.

APPLICATION FILED novzo, 1914.

1 1 52,720. Patented Sept. 7, 1915.

. TE S A" SHUTTER-LOCK.

GEORGE w. Elsi-1E3, OF BALTIiVgO'REMARYLAND, ASSIGNOR or I-IYMAN 1\T. TALKIN, or BALTIMORE, MARYLAND.

ONE-HALF To Patented Sept. 7, 1915.

Application filed November 20, 1914. Serial No. 873,100.

To all whom it may concern:

Be it known that I, Gnoncn W. FIsHER, a citizen of the United States, residing at Baltimore city, State of Maryland, have in vented ccrtainne'w and useful Improvements in Shutter-Locks, of which. the fol lowing is a specification. I

This invention isin the nature of an opening, closing and fastening device for shutters or like hinged structures and has for its primary object to provide a simply and economically constructed attachment whereby the shutter may be readily opened or closed, and whereby, when the movement of opening or closing ceases, the shutter will be antomatically locked in its open or closed position, and held therein until the operation of closing or opening is again performed, the operating handle of the attachment be ing in position to be easily reached and readily manipulated by a person inside the building upon which the. shutter is mounted.

WVith this object in, View the invention consists in the improved construction, arrangement andcombination of the component elements. of an attachment of the char acter specified, allof which will be hereinafter fully described and afterward specifically claimed.

In order that the construction and operation thereof may be readily comprehended, an approved embodiment of the invention is illustrated in the accompanying drawings and the invention will now be fully and specifically described in connection with said drawings in which 7 Figure 1 represents a plan view of part of the window sill equipped with an attach- Inent constructed in accordance with this invention, the outline of the shutter being shown. Fig. 2 represents a sectional view on the plane indicated by the broken line 2-2 of Fig. 1. Fig. 3 represents a sectional view on the plane indicated by the broken line 33 of Fig. 1. Fig. 4 represents a sectional view on the plane indicated by the broken line 4-4 of Fig. 1. Fig. 5 represents a detail View in bottom plan showing the ratchets and pawls, the ends of the latter being broken away.

Where the same parts are illustrated in a plurality of the views of the drawings, they are indicated by like reference characters.

Referring specifically to the drawings 6 indicates a window sill and 7 part of a window frame, on which is secured a box-like casing comprising plates 8 and 9, by screws 10 and 11 as shown respectively in Figs. 1 and 4. This casing passes under the shutter 12 when closed and incloses the principal operative parts, said casing having a spindle l3 pivotally secured thereon.

Rigidly secured to the spindle 13 so asto turn therewith, is a horizontal lever 14 which passes under a plate 15 secured to the bottom of the shutter by screws 16 and is slotted to receive a pin 17 which at its inner end is secured to the plate 15 and has a button head 18 on its outer end. By means of this construction the lever 14 may have a sliding movement on the pin 16.

Mounted upon'the spindle 13 is a box-like structure comprising an upper plate 19 and a lower plate 20 the latter being extended, as at 21, and slotted, as at 22, to receive a pin 23, secured to an extension 24, which carries a pivoted handle 25, said pin 23 being slidable in the slot 22 and the extension 24 with its handle 25 is slidable with the pin '23 and the extension 24 is held against lateral motion on the extension 21 by cars 26 on said extension 24 bent over and embracing the edges of said extension 21.

On the spindle 13 are two independent ratchet disks 27 28, with teeth pointing in opposite directions, said teeth being respectively engaged by pawls 29, 30, pivotedbe tween the plates 19 and 20, which pawls are normally held in engagement with the teeth by a double ended spring 31, 32, secured at its middle to'the plate 20 and bearing outwardly at its ends against the pawls. A lever 33, pivoted at 34 to the plate 20, has two lateral teeth 35, 36, which are adapted to engage the ends of the pawls 29 and 30 respectively, and has one end loosely con nected by a link 37 to the slidable extension 24. The shutter 12 is swung on hinges 37 indicated by dotted lines in Fig. 1, so that the spindle 13 upon which the attachment swings, is eccentric to the axis of motion of the shutter on its hinges. When the handle of the attachment is to be swung around, say to open the shutter, the pawl 29 is removed from contact with the teeth of its ratchet disk, as shown in Fig. 1, through the engagement of tooth 35 with the end of said pawl which is caused by pushing the handle 25 inwardly, and said pawl 29 will then move over the end of the teeth until the end of the stroke whereupon, by the release of the handle, the spring forces the pawl tooth into engagement with its ratchet teeth and the parts are locked. This swinging of the handle carries the lever 14: around with the spindle 13 as its axis, carrying the shutter outward, the slidability of the lever on the pin 17 compensating for the eccentricity of the axis 13 of the lever end and the axis of the shutter hinges.

The construction, arrangement, and operation of the component elements of the invention, have been very specifically described herein, but it willbe obvious to those skilled in the art to which the invention most nearly appertains that many slight changes and variations may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.

Having thus fully described my invention, what I claim as new and desire to. secure by Letters Patent of the United States is 1. In an attachment of the character specified, the combination of a spindle adapted to be pivoted to a window sill, and a lever secured to turn with the spindle and slidably connected with a shutter hinged to the frame, with means for turning the spindle and locking the same at either extreme of its movement, said means embodying a plate fixed to said spindle and provided with an extension, a pivoted handle slidably mounted on said extension and adapt- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

ed to move said extension to rotate said 2. In anattachment of the character specified the combination of a spindle adapted to be pivoted to a window sill, and i a lever secured to turn with the spindle and slidably connected with a shutter hinged to the frame, with means for automatically locking the spindle at either extreme of its movement, said means embodying two plates on the spindle, two ratchet'disks on the spin- In testimony whereof I' afiix my signa-.

ture in presence of two witnesses.

' GEORGE W. FISHER.

' Witnesses:

E. WALTON BREWINGTON, HOWARD ADAMS.

Washington, D G. 

